Join Date: Nov 2015
Location: Victoria BC Canada
Model: 1985 GL1200 Limited Edition and 1995 GL1500 SE CDN Edition
Went looking for the definition for API CJ-4 spec. API Service Category CJ-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2007 model year on-highway exhaust emission standards as well as for previous model years.
Your bike is meant to use API spec SG, SE, or SF. In today's API spec probably API SN spec. I'd go looking for an oil that is API SN spec with no additives (lower half of the API donut blank). Just my opinion.
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